Range



Feb. 2, 1932. B. B. KAHN ET AL. 1,843,486

RANGE Filed Nov 15, 1928 6 Sheets-Sheet 2 INVENTOR BYW/M M A TTO NE YFeb. 2, 1932. B. B. KAHN ET AL RANGE Filed Nov 15, 1928 6 Sheets-Sheet 4not!!! 5251.

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Patented Feb. 2, 1932 UNITED STATES PATENT orrlcr.

m'ramn B. man, or omcmmrrr, m WILLIAM :-r. BRADBURY, or HAMILTON, onro,assxenoas TO THE'ESTATE srovn comramr, or HAMILTON, care, A 003mm- SIGNOF OHIO RANGE Application filed November 15, 1928. Serial No. 319,581.

This invention relates to cooking stoves and is herein shown as appliedto a range of the electric type.

()ne object of the invention is the provision of a cooking range whichis constructed of a number of sheets or stampings which are connectedtogether in a novel manner so that the connections between parts of therange are practicall invisible to the user.

Another ob ect of the invention is the provision of a range having anoven shell enclosed within an outer oven lining for heat insulation ofthe oven, outside finish-plates being provided outside the oven liningand spaced therefrom to increase the effectiveness of the heatinsulation. Other objects and advantages of the invention will beapparent from the following description and from the accompanyingdrawings in which-- Fig. -1 is a front elevation of a cooking rangeembodying the present invention;

Fig. 2 is a top plan view of the range;

Fig. 3 is a vertical sectional view through titre 011611 side of therange on the line 3-3 of Fig. 4 is a section through the cooking topside of the range on the line 4-4 of Fig. 2;

Fig. 5 is a section through the cooking top side of the range on theline 5-5 of Fig. 4;

Fig. 6 is a horizontal section through the oven on the line 6-6 of Fig.3; and

Fig. 7 is a vertical transverse section through the oven side of therange on theline 77 of Fig. 2.

The cooking range of the present invention, herein shown as a range ofthe electric type, embodies essentially a main base 10 which may besupported at a suitable height by legs 11. At one side of the main baseis a cooking top 12, and at the other side of the main base is theoven.designatedgenerally 13. A rear splash panel 14 is preferablyprovided above the rear of the cooking top as shown.

Above the forward side of the main base is an oven front 15 preferablyin the form of a sheet metal stamping having rearward ly curved side andtop flanges. the lower end of the front being marginally flanged in areverse direction as indicated at 16 so that it may be attached to theupper front portion of the main base by bolts or screws 17, the heads ofwhich are thus concealed within the reverse bend so that the bolts arenot apparent from the front of the stove. This oven front 15 has a dooropening 18 suitably rabbeted to receive the oven door 19. This oven dooris preferably constructed in the manner disclosed in the copendingpatent of Bertrand B. Kahn No. 1,7 86,429, granted December 30, 1930,and as shown embodies an outer panel 20 and an inner panel 21 betweenwhich suitable insulating material 22 may be held. A hinge connection 23is provided preferably at the bottom of the door to permit the door toopen downwardly so that accessmay be had to the interior of the oven.The oven includes an inner oven chamber or shell 25 embodying the topsheet metal portion 26 connected at its rear and side edges to the sideportions 27 28 and 29 as by means of the marginal flanges 30, abottompart 31 being likewise connected to the portions 27, 28 and 29 sothat the oven chamber is a continuous sheet metal shell closed at its.front by the oven front 15 and door 19. Suitable insulating material,shown in the form of molded block slabs 33 are shown provided around theoven chamber or shell 25, these blocks being supported within an outeroven lining designated generally 34. This oven lining is' formed of top,bottom and side lining plates 35. 36, 37, 38nd 39, which are preferablysheet metal stampings, the plate 39 forming a back plate at the rear ofthe stove. These various plates of the outer oven lining are attachedtogether at the rear of the stove by suitable bolts or screws 40 whichconnect the various marginal flanges of the plates provided for thispurpose. The back plate 39 extends downwardly at 41, below the bottomplate 36 and supports the outer oven lining from the rear side of themain base '10. and the forward side of the lower lining plate 36 isdownwardly flanged as indicated at 42, Fig. 3, to support the front ofthe lining from the main base. This provides an air space 43 between thelining plate 36 and the top of the. main base which ining top side ofthe oven.

5 45 bein formed of a sheet metal stamping provided with marginalflanges by means of which it is supportedin place. The bottom marginalflange 46 and the front/side flange 47 of this panel space it a suitabledistance outwardly from the lining plate 37. The oven front 15 extendsoutwardly and rearwardly at its marginal side to embrace and retain thefront portion of this panel 45 neatly without necessitating the use ofattaching bolts or screws. The bottom flange 46 is held by a retainingstrap 48 connected to the main base by the bolts 49 so that the bottomof the panel 45 is also retained 'without'apparent or visible boltconnections. At the rear of the range the panel 45 has an attachingflange 50, bolts and screws 51 fastening this flange to the side of theback plate'39, and as these screws 51 are at the rear of the stove theyare not apparent to the user. The top of this panel 45 is retained andheld in place by a top panel 53 which is spaced above the top liningplate 35 by the front marginal flange 54 on this linin plate. The toppanel 53 is bent downward l y and inwardly as indicated at 55 and fitsagainst an inwardly and upwardly turned portion 56 of the panel 45 sothat when thetop panel is inserted in a downward direction over the ovenit retains the top of the side panel 45 without any attaching bolts orscrews being apparent to the user. The top panel, being spaced above thetop lining plate 35 provides a dead air chamber 57 above the oven sothat the top panel, which is preferably formed as a sheet metal stampingmay be enameled or otherwise finished to form a finish surface of thestove without the likelihood of the finish being marred or injured bythe heat of the oven, due to the effective manner in which the oven isinsulated and its spaced arrangement from the heat zone. The panel 45likewise forms a finish plate, and gives a pleasing appearance to therange, the top panel being held in the same manner as the side panel 45by a marginal flange of the oven front without the use of bolts orscrews. The rear of the top plate is attached by screws or bolts 58 tothe back plate 39, this bolt connection being the onl panel 53 inposition.

At the cooking top side of the oven the latter is provided with a splashside panel or finish plate 60 which is screwed or bolted at 30 61 to theback plate 39 and held without the use of bolts or screws at its frontand top edges by the oven front and by the top panel in the same waythat the panel 45 is mounted. This provides a dead air space 61 on thecook- The various fineaaase ish plates, which do not support anysubstantial weightor enter into the structural frame of the stove otherthan for finish purposes, are thus all readily assembled anddetachable'at the back of the stove, and are all mounted at the front ofthe stove in such a way as to obviate all attaching bolts and screwssothat a very pleasing and finished appearance of the stovelis the result.Yet the various stoveparts entering into its construction may be formedas sheet metal stampings or the like, all of which are of comparativelysimple construction and easily attached together to provide a rigidstructure.

Within the oven, and preferably welded to the two sides of the ovenchamber or shell are slide clips 63 which support a top-heating unit 64in such a way as to permit the heating unit to be inserted merely bymoving it rearwardly into the oven and permitting its ready removal in areverse manner. This heating unit, which may be constructed of suitableresistance elements to provide for baking and broiling operationsis,provided with terminals 65 at the rear of the unit insertable intofemale terminals 66 provided in the rear of the oven, the terminals 66being connected by suitable wiring 67' which leads to the controlswitches shown iniFig.

4. This wiring is preferably enclosed at the rear of the stove by ahousing 67 which'is detachably fastened as by the wing nuts 68 so as tocover the Various electrical connections and terminals. A bottom heatingelement, used in baking operations, is shown at 68 resting on the bottom31 of the oven shell. This bottom heating element 68 is electricallyconnected at its rear in the same manner as the upper heating elementandis insertable into the oven merely by moving it rearwardly or removablefrom the oven merely by pulling it outwardly, when its forward sideis'moved up to clear the door opening. This bottom heating element isprefer ably covered by an oven floor 69 which is flush with the bottomof the door opening, the heating element being thus located below thelevel of the door opening so that the full space within the oven may beutilized. The oven floor or pan 69 is marginally flanged as shown at.70so as to rest on the heating ele- '7 y of the heating element, but beingnormally 55 one necessary for. properly supporting the top held inposition by oven ledges 71 the lower edges of which engage-the sideportions of the floor 69. These oven ledges 71, which are eachpreferably bent from a single sheet of metal to provide large horizontalridges or projections 72 spaced along its height, are separate pieceseasily removable from or insertable into the oven, their upper edgesbeing retained by wing clamps or nuts 73 which may be turned throughpart of a revolution to free the tops of the oven ledges and permit themto be removed, after which. the

- disconnection.

removal of the oven floor is an easy matter.

.The entire interior of the oven may thus be cleaned by removing theheating elements, ledges and floor, all of which are held in placewithout the use of bolts or screws such as would require the use oftools for their After the removal of these parts from the oven shell thelatter may be easily cleaned and it will be noted that the corners 74 ofthe oven are all curved to aid in cleaning.

Suitable temperature control or indicating means indicated at 76 may berovided for the, oven, this means being readi y removable and detachablyheld in lace by screws 77. An oven vent is provided at one of'the ovensides to carry off excess steam." This vent,

shown at 78, has a condensation well 79 to take care of condensation,the trapped liquid preventing excessive movement of hot vapors from theoven. A drain hole 7 9' isprovided for drawing ofi condensationcollected or for cleaning pur oses. e

Above the ase 10 on the cooking top side of the stove is a cooking topplate 80, preferably of heavy gage sheet steel and formed as asinglepiece of metal. This cooking top plate is supported in position bysupports 81 and 82 which are bolted at 83 and 8a to the upper surface ofthe main base and are connected by bolts 85 to clips 86 welded to theunder side of the cooking top plate 80 so that the plate is without boltopenings such as would mar its pleasing appearance. Preferably thefrontand side marginal edges of the plate 80 arefianged downwardly at 87 theflange on the oven side of the stove being held by clips or straps 88which are bolted at 89 to the oven lining plate 38. The cooking topcontains a suitable number of holes for receiving the cooking top units90, these holes preferably being formed by upwardly extending flanges 91providing grooves or depressions 92 around the units which may receiveany material spilled on the cooking top, these grooves being easilycleaned since the cooking top units merely rest on the plate 80 and arereadily withdrawn from their normal positions. etween the severalcooking top units the plate 80 is depressed-as at 106 to the level ofthe grooves 92 with which this depression merges. Ata central portion ofthe depression 106 is an opening 107 below which is a suitable pipe 108extending to apoint below the various electrical devices under thecooking top so that material which overflows into the grooves anddepression cannot overflow the grooves and get into the electricalswitches, connections, etc., where it might disturb the pro erfunctioning of these devices and whereiit is comparatively inaccessibleand hard to clean. A collecting I pan 109 is positioned below the pipe108 which extends to an opening in the main base of the invention, it

10, the pan 109 being provided below the top of the main'base where itis easily accessible for removal and cleaning.

The supports'81 and 82 which hold the cooking top plate 80 also holdswitch supporting bars 94 on which are mounted suitable switch baseshave manually operable switch members or knobs 96 accessible from thefront of the stove for the control of the various cooking top units andoven heating elements.

The rear sides of these switches are electrically connected to suitablebus bars and to the wiring which leads to the various heating elementsof the stove. At one side of the switches is a convenience plug asshown, and below the switches is a bracket 97 which is supported on themain base 10 and which in turn supports a main line switch or fuse block98 and an oven relay switch 99. A

95. These switch bases.

pilot light 100 is also shown supported below the switches on the switchbar and cooking top support 82, These various switch bases and otherarts just described are mounted in back out a removable switch panelfinish plate102 which extends across the front of the range below thecooking top plate 80. The upper side of thisswitch panel plate ispreferably flanged inwardly as shown at 103 below the front flange ofthe cooking top plate, plate 102 being removably supported by means ofsuitable attachment members 104 which extend into the mam base 10. Theswitch studs 105 extend through openings in this switch panel plate andthe control knobs 96 are screwed on the outer ends of these studs whenthe switch panel plate is in position. This switch panel platepreferably does not support-any substantial portion of the weight of thecooking top plate, the supports 81 and 82 performing such functionalone. Plate 102 is finished or enameled and easily mounted in positionin a detachable manner like the other finish plates of the range, sothat its removal for refinishing or replacement is an easy matter.

While the form of ap aratus herein de scribed constitutes a pre erredembodiment is to be understood that the invention is not limited to thisprecise form of apparatus, and that changes may be made therein withoutdeparting from the.

scope of the invention w ich is defined in the appended claims.

What is claimed is:

l. A cooking range of the class described comprising a main base, anoven front on. said base, an inner oven lining above said base, an outeroven lining spaced from, said inner lining, and outer finish platesspaced from said outer oven lining.

2. A cooking range of the class described comprising a main base, anoven front on said base, an inner oven lining above said base, an

outer oven lining spaced from said inner lining, and outer finish platesspaced from said outer oven lining, said finish plates includa top plateand side plates attached at the rear of the stove to said outer ovenlining.

3. A cooking range of the class described comprising a main base, anoven front on said base, an inner oven lining above said base, an outeroven liningspaced from said inner lining, and outer finish lates spacedfrom said outer oven lining, said finish plates including a top plateand side plates attached at the rear of the stove to said outer ovenlining the front edges of said finish plates being free from directconnection to theoven front.

4. A cooking range of the class described comprising a main base, anoven front on said base, an inner oven lining above said base, an outeroven linin spaced from said inner lining, and outer fi nish lates spacedfrom said outer oven lining, said finish plates including a top plateand side plates attached at the rear of the stove to said outer ovenlining, the front edges of said finish plates being free from directconnection to the oven front, said top plate being downwardly flanged toenclose the upper edges of the side plates and retain them in position.

5. A cooking stove of the class described comprising an inner ovenlining, an outer oven lining spaced from said inner oven lining, andouter finish plates spaced from said outer lining said outer finishplates being held definitely in place at the rear of the stove in adetachable manner, the finish plates at the front of the stove beingfree from bolted connections.

A cooking stove of the class described comprising an oven front, aninner oven lining, an outer oven lining s need from said inner lining,an outer top nish plate and an outer side finish plate attached at therear of the stove to said outer oven lining, the front edge of said sidefinish plate being retained by said ovenfront without direct boltedconnection thereto at the front of the stove, said top finish platebeing retained by said oven front without direct bolted connectionthereto, a side edge of said top finish plate retaining the top edge ofsaid side finish plate without direct bolted connection thereto.

7. A cooking stove of the class described comprising a main base, anoven front on said base, an oven lining, and outer finish platesincluding a top plate and a side plate fastened only at the rear of thestove to said oven lining, said top and side plates being retained atthe front of the stove by said oven front without bolted connectionthereto.

8. A cooking stove ofthe class described comprising a main base, an ovenfront on said base, an oven lining, and'outer finish plates including atop plate and a side plate fas' tened only at the rear of the stove tosaid oven lining, said top and side plates being retained at the frontof the stove by said oven neeaeee front without bolted connectionthereto, said top edge or said side comprising an inner oven lining anouter oven linin spaced from said inner lining and enclosing insulationmaterial, and outer finish plates spaced from said outer oven linin anddetachably fastened in place to provide a dead air chamber outside ofsaid outer oven lining. f

10. A cooking range of the class described comprising an oven, an ovenledge at each side of said oven,means for retaining upper portions ofsaid oven ledges, an oven floor spaced above the bottom of said oven, aheating unit below said oven floor, the lower edges of said oven ledgesretaining said floor in position.

11. A cooking range of the class described comprising an oven, an ovenledge at each side of said oven, means for retaining upper portions ofsaid oven ledges, an oven door spaced above the bottom of said oven, aheating unit below'said oven floor, the lower edges of. said oven ledgesretaining said floor in position, a top heating element, said heatingelements, oven floor and oven ledges being all-readily removable fromthe inside of the oven.

12. An electric range of the class described comprising a main base, anoven front havolted to the front of said base so that the bolts areconcealed from view atjthe front of the stove, an oven supported aboveone side ofsaid main base, outer finish plates detachably connected inposition only at the back of the stove and having their front edgesretained in position by said even front, a cooking top formed of asingle sheet of metal having downturned front and side marginal flangespositioned above the other side of said main base, means supporting saidcooking top from said main base, and a panel plate detachably fastenedbelow the front of said cooking top.

13. A cooking range of the class described comprising an oven, top andside finish plates spaced from said oven, said side plates havinginwardly bent and upturned top flanges and said top plate havingdownwardly bent side edges adapted to retain said side plates inposition without bolted connection thereto.

14. An electric rangeof the class described comprising a main base, anoven front on said base, an oven above said base, oven lining platesspaced from said oven at the sides and top of said oven, and outerfinish plates spaced from said lining plates, said plates havingmarginal flanges which definitely space them apart, said oven fronthaving rearwardly extending edges which embrace ate being downwardlyfian ed at its I Ell) the front edges of said finish plates, and meansat the rear of the stove only for attaching said top finish plate inposition.

15. cooking range of the class described comprising a base, an ovenfront on said base, oven lining plates supported on said base, outerfinish plates spaced from said lining plates at the top and sidesthereof, said plates having marginal flanges which definitely space themapart, said oven front having rearwardly extending edges enclosing thefront edges of said finish plates, and attachment means only at the rearof the range for securing said top finish plate in position.

In testimony whereof We hereto aifix our signatures.

BERTRAND B, KAHN. WILLI BRADBURY.

